what is the size of buy-in in BSS NL 0.02

In theory articles it's written that you should go to te table with maximum possible stack which is 100BB. But in pokerstars at the NL0.01-0.02 maximum possible stack is 5$ whereas 100BB = 100*0,02=2$. So which one is correct??

Yeah im currently playing NL2 and ive been buying in for $2. Put it this way, if your BRM cant take $5 then dont buy in that much, but if it can then you can think about playin with this buy in amount. Doing this will also teach you a lot about deepstack play as Tribun said.